Blur Faces and Pixelate Image Regions
Hide faces, license plates or personal details by drawing boxes to pixelate, blur or black out. Runs in your browser; the image is never uploaded.
Runs entirely in your browser. Your data is never uploaded.
Related Tools
View AllWhat is Blur Faces?
This tool hides sensitive parts of a photo. You draw a box over each face, license plate, name or other detail and choose to pixelate, blur or cover it with a solid box. Automatic face detection is used only when your browser provides the Shape Detection API (FaceDetector), which most browsers do not; otherwise you select the regions by hand, which is also the most reliable way not to miss anything.
How to use Blur Faces
- Drop, choose or paste the photo.
- Drag on the image to draw a box over each area to hide, or enter X, Y, width and height and click Add region.
- Choose the Effect (Pixelate, Blur or Solid box) and its strength or color.
- Move or resize boxes as needed, check the result and download the redacted image.
Example
40×20 image with red, green, blue and white quadrants, pixelate region X=10, Y=0, 20×20 with block size 20
The region becomes one #808080 block (the average of the four colors); pixels outside stay unchanged
When to use Blur Faces
Use it before sharing photos of people, screenshots with personal data, or pictures of cars and documents online. For truly sensitive information prefer a solid box or large pixel blocks: light blur and small blocks can sometimes be partially reversed or recognized.
How Blur Faces works
Each region is processed on the image’s pixel data. Pixelate replaces every block of N×N pixels inside the region with its average color; blur applies a Gaussian blur (three box-blur passes) only inside the region; solid box fills it with an opaque color. If the browser exposes window.FaceDetector, detected face rectangles (with 15% margin) are added as regions you can adjust. The exported image is re-encoded from the canvas, so EXIF metadata such as GPS coordinates is not included.
Common Use Cases
- Pixelating bystanders’ faces in street or event photos.
- Hiding license plates before posting car pictures.
- Blacking out names, emails or account numbers in screenshots.
- Anonymizing children’s faces before sharing photos.
Security Note
Images are decoded, processed and encoded locally in your browser with the Canvas API. Nothing is uploaded to a server. The output does not contain the original EXIF metadata (such as GPS location). Always review the result: anything not covered by a region stays visible.
FAQs
Does it detect faces automatically?
Only in browsers that provide the experimental Shape Detection API. In other browsers you draw the boxes yourself; the tool says which case applies.
Which effect is safest?
A solid box removes the information completely. Pixelation with large blocks is also strong; light blur is the weakest and is best for aesthetic use.
Is my photo uploaded for processing?
No. All detection and redaction happens in your browser, and the image never leaves your device.